A structure of a dial calibration clutch device and a watch

Abstract

The present invention provides a structure of a dial calibration clutch device and a watch. By adjusting the position of the ball spring through the clutch stem, a clutch structure is realized that can control the neutral gear and drive the adjustment gear to rotate, thereby driving the dial to rotate. Through the structure of the dial calibration clutch device, it is convenient to manually rotate the altitude display dial for adjustment when calibration is needed, and lock the rotation of the altitude display dial when it is not needed, ensuring the stability and accuracy of measurement, and realizing simple structure, convenient processing technology and convenient user operation.

Description

Technical Field

[0001] The present invention relates to the field of watches, and more particularly to a dial calibration clutch device structure and a watch. Background Art

[0002] In some special operations or sports, in addition to the conventional time display, watches also require other auxiliary functions, such as compass, altitude display and other functions. Especially for altitude display, most of the existing watches are realized electronically. Generally, an atmospheric pressure sensor is used to collect atmospheric pressure data, and the collected atmospheric pressure data is converted into the corresponding altitude information, and then displayed in the form of dial numbers or pointers. The accuracy of realizing this function by electronic means is more precise, but electronic products are prone to software crashes, power failures, shutdowns and other failures in some harsh environments, such as high altitudes. In these application environments, if the watch fails or the display is inaccurate, it may bring serious accidents. Therefore, it is necessary to add another guarantee, to provide a purely mechanical structure for altitude display in addition to the electronic method, to provide an additional insurance to ensure the use safety. For watches with altitude display function, generally, standard atmospheric pressure is used to calibrate the watch during the production process. However, if there is an error during the user's use, a better calibration method needs to be provided to the user. Another user scenario requirement is that what the user wants is the relative altitude, rather than the absolute altitude. For example, in mountain climbing, there is a certain altitude at the starting point itself, and the user wants to conveniently confirm how much altitude has actually risen. In this case, a zeroing operation needs to be performed at the starting point. Generally, calibration or zeroing can be achieved by adjusting the watch hands or rotating the dial. Since the rotation of the watch hands for the altitude indication realized by mechanical means is directly transmitted from the sensor, if it is to be realized, the structure is very complex or the normal altitude transmission may be damaged. Therefore, there is a lack of a simple and stable structure for realizing dial calibration, and it is also necessary to ensure the stability of the dial when calibration is not required. Summary of the Invention

[0003] The technical problem to be solved by the present invention is how to provide a simple and stable structure for realizing dial calibration, and it is also necessary to ensure the stability of the dial when calibration is not required.

[0004] To solve the above problems, the present invention provides a structure of a dial calibration clutch device, including an altitude display dial, characterized in that a scale indication is provided on the upper surface of the altitude display dial, and a calibration gear is provided along the circumference of the outermost circle of the lower surface. An annular limiting groove is also provided inside the calibration gear; a positioning annular groove matching the annular limiting groove is provided on the main body of the watch case to fix the altitude display dial inside the main body of the watch case. An annular brake groove is provided along the circumference on the side surface of the altitude display dial, and a positioning rubber ring is provided on the annular brake groove; further included are an adjusting gear, a handle tube and a clutch head. A clutch installation hole is provided on the side surface of the main body of the watch case, and a circular handle tube groove is provided outside the clutch installation hole, which matches the clutch head; a circular calibration slot is provided at the position of the calibration gear in the clutch installation hole. After the handle tube is pressed in from the outside of the circular handle tube groove, the end portion does not exceed the circular calibration slot, and the adjusting shaft of the clutch head passes through the handle tube; a clutch limiting clamping groove is provided at the end of the adjusting shaft of the clutch head, and a clutch positioning spring clip with a diameter larger than the clutch installation hole is clamped on the clutch limiting clamping groove. A ball opening is provided on the adjusting shaft of the clutch head, and a ball spring clip is pressed into the ball opening. A bayonet matching the ball is provided between every two gears of the adjusting gear; when the clutch head is pulled outwards and is limited by the clutch positioning spring clip and cannot be pulled outwards any further, the ball opening is exactly at the position of the circular calibration slot, and the ball pops out and is stuck in the bayonet; when the clutch head is pressed inwards until it cannot be pressed in any further, the ball is pressed in and completely disengages from the bayonet.

[0005] The structure of the dial calibration clutch device is characterized in that the bayonet is provided with guiding round openings along the axis on both sides of the connecting edge on the inner side of the adjusting gear only.

[0006] The structure of the dial calibration clutch device is characterized in that at least two waterproof grooves are provided on the adjusting shaft, and waterproof rubber rings are provided on the waterproof grooves.

[0007] A watch is characterized in that the control of the altitude display dial is realized by adopting the structure of the dial calibration clutch device according to any one of claims 1 to 3.

[0008] The watch described above is characterized by further comprising a watch back cover, a front cover, an altitude indicating pointer, a metal vacuum capsule, a transmission rod, a reversing gear and a horizontal gear. The height of the metal vacuum capsule contracts and changes following the pressure of the external atmospheric pressure. One end of the transmission rod is uniformly provided with height conduction teeth in the vertical direction. The reversing gear includes a receiving gear and a reversing bevel gear arranged concentrically. The diameter of the receiving gear is smaller than that of the reversing bevel gear. The horizontal gear is provided with a horizontal conduction bevel gear at one end. The tooth shape of the receiving gear is matched with that of the height conduction teeth. The reversing bevel gear is matched with the horizontal conduction bevel gear. One end of the metal vacuum capsule is fixed on the watch back cover, and the other end is fixedly connected with the end of the transmission rod without height conduction teeth. The reversing gear is fixed inside the movement through a horizontal rotating shaft and freely rotates around the horizontal rotating shaft, wherein the teeth of the receiving gear are arranged in tooth alignment with the height conduction teeth. The horizontal gear is fixed on a vertical rotating shaft, the vertical rotating shaft is arranged perpendicular to the watch dial, the horizontal gear is arranged parallel to the watch dial, and the reversing bevel gear is arranged in tooth alignment with the horizontal conduction bevel gear.

[0009] The watch described above is characterized in that the angle between the line where the teeth of the reversing bevel gear are located and the axis line of the reversing bevel gear is set as A, and the angle between the line where the teeth of the horizontal conduction bevel gear are located and the axis line of the horizontal conduction bevel gear is set as B, and A + B = 90 degrees.

[0010] The watch described above is characterized in that the rotating part to which the altitude indicating pointer is fixed is fixed on the vertical rotating shaft for fixing the horizontal gear and rotates at the same angle as the horizontal gear.

[0011] The watch described above is characterized by further comprising an isolation chamber and a fixing washer. The isolation chamber is an open-ended cylinder at one end. A circular opening matching the isolation chamber is provided on the watch back cover. The isolation chamber is fixed at the circular opening with the opening facing outwards. An annular groove is provided at the port of the circular opening. The metal vacuum capsule includes a fixed end and a free end. The diameter of the free end is smaller than that of the fixed end. The sum of the height of the fixed edge of the fixed end and the thickness of the fixing washer is the same as the depth of the annular groove. The diameter of the fixed end is slightly smaller than the diameter of the annular groove. The fixing washer is in interference fit with the annular groove to fix the metal vacuum capsule on the isolation chamber, and the isolation chamber is fixed on the watch back cover. The inner diameter of the isolation chamber is larger than the diameter of the free end of the metal vacuum capsule. At the other end of the isolation chamber, there is a transmission hole with a diameter larger than that of the transmission rod, a square slot passing through the center, a circular slot on one side of the square slot, and a horizontal hole passing through the axis and perpendicular to the square slot in the vertical direction. At least one air inlet is provided in the inner cavity of the isolation chamber to connect the inner cavity with the external atmosphere.

[0012] The described watch is characterized in that one end of the transmission rod with highly conductive teeth completely extends out of the transmission through-hole. The horizontal rotating shaft is installed on the horizontal through-hole and passes through the reversing gear, restricting the reversing gear at the square slotted position. The center position of the circular slot is coaxially arranged with the center of the altitude display dial. The circular slot is sized to match the horizontal conductive bevel gear of the horizontal gear. The vertical rotating shaft is arranged at the axial center position of the circular slot, and a drill holder is provided at the bottom of the axial center of the circular slot.

[0013] The described watch is characterized in that two-stage stepped annular grooves are provided at the circular opening port, which are respectively an installation metal vacuum bellows groove and a fixing groove from the inside to the outside; the height of the fixed edge of the fixed end is the same as the depth of the installation metal vacuum bellows groove, and the diameter of the fixed end is slightly smaller than the diameter of the installation metal vacuum bellows groove; the diameter of the fixed spacer is the same as the diameter of the fixing groove, and the fixed spacer is in interference fit with the fixing groove to fix the metal vacuum bellows on the isolation chamber, and the isolation chamber is fixed on the watch bottom cover.

[0014] Implementing the present invention has the following beneficial effects: Through the dial calibration clutch device structure, it is convenient to manually rotate the altitude display dial for adjustment when calibration is required, and lock the rotation of the altitude display dial when it is not needed, ensuring the stability and accuracy of measurement, and achieving simple structure, convenient processing technology and convenient user operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the first 1 / 4 cutaway sectional view of the structure for realizing the display of the altitude height of the watch.

[0016] Figure 2 It is the second 1 / 4 cutaway sectional view of the structure for realizing the display of the altitude height of the watch.

[0017] Figure 3 It is the sectional view of the structure for realizing the display of the altitude height of the watch.

[0018] Figure 4 It is the schematic structural view of the horizontal gear.

[0019] Figure 5 It is the schematic structural view of the reversing gear.

[0020] Figure 6 It is the schematic structural view of the metal vacuum bellows.

[0021] Figure 7 It is the front three-dimensional schematic view of the altitude detection movement chamber.

[0022] Figure 8 It is the three-dimensional schematic view from the bottom perspective of the altitude detection movement chamber.

[0023] Figure 9 It is a schematic structural diagram of a transmission rod;

[0024] Figure 10 It is a schematic diagram of Assembly Step 1 of the structure for displaying altitude;

[0025] Figure 11 It is a schematic diagram of Assembly Step 2 of the structure for displaying altitude;

[0026] Figure 12 It is a schematic diagram of Assembly Step 3 of the structure for displaying altitude;

[0027] Figure 13 It is a schematic diagram of Assembly Step 4 of the structure for displaying altitude;

[0028] Figure 14 It is a schematic diagram of Assembly Step 5 of the structure for displaying altitude;

[0029] Figure 15 It is a schematic diagram of Assembly Step 6 of the structure for displaying altitude;

[0030] Figure 16 It is a schematic diagram of Assembly Step 7 of the structure for displaying altitude;

[0031] Figure 17 It is the first 1 / 4 chamfered sectional view of the structure of the dial calibration clutch device;

[0032] Figure 18 It is the second 1 / 4 chamfered sectional view of the structure of the dial calibration clutch device;

[0033] Figure 19 It is an exploded schematic diagram of the structure of the dial calibration clutch device;

[0034] Figure 20 It is a partial sectional view when the clutch is in neutral;

[0035] Figure 21 It is a partial sectional view when the clutch is in a calibratable state. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Figure 17 It is the first 1 / 4 chamfered sectional view of the structure of the dial calibration clutch device; Figure 18It is the second 1 / 4 chamfer sectional view of the dial calibration clutch device structure; Figure 17 and Figure 18 Partial sectional views of watches at two different positions are taken respectively, showing the specific composition and connection relationship of the dial calibration clutch device structure from different angles.

[0038] The components related to the dial calibration clutch device structure mainly include: altitude display dial 201, positioning rubber ring 202, clutch stem 204, adjusting gear 207, tube 206 and ball spring clip 208.

[0039] The upper surface of the altitude display dial is provided with scale indications. Along the circumference of the outermost circle of the lower surface, a calibration gear 2011 is provided. An annular limiting groove 2012 is also provided inside the calibration gear; on the main body of the watch case, a positioning annular groove matching the annular limiting groove is provided to fix the altitude display dial inside the watch case main body. Along the circumference of the side surface of the altitude display dial, an annular brake groove 2013 is provided, and a positioning rubber ring 202 is provided on the annular brake groove.

[0040] On the side surface of the watch case main body, a clutch mounting hole 209 is provided. Outside the clutch mounting hole, a circular tube groove 2091 is provided, which matches the clutch stem; the clutch mounting hole is provided with a circular calibration slot 2092 at the calibration gear position, and the upper part of the circular calibration slot is open to realize the installation of the adjusting gear 207.

[0041] Figure 19 It is an exploded view of the dial calibration clutch device structure; during installation, the ball spring clip 208 can be first installed into the ball opening 2041 on the clutch stem. The balls on the ball spring clip can be pressed into the ball opening under external force extrusion and pop out of the surface of the ball opening without external force; in order to ensure sufficient adjustment stroke, the adjusting shaft is pressed into the rear end from the outside of the circular tube groove and does not exceed the circular calibration slot; the adjusting shaft of the clutch stem is provided with a clutch limiting slot 209 at the end, and a clutch positioning spring clip with a diameter larger than the clutch mounting hole is clamped on the clutch limiting slot. When the clutch stem is pulled outwards and is restricted by the clutch positioning spring clip and cannot be pulled outwards anymore, the ball opening is exactly at the position of the circular calibration slot, and the ball pops out and is stuck on the bayonet 2071; when the clutch stem is pressed inwards until it cannot be pressed in, the ball is pressed in and completely disengages from the bayonet.

[0042] In order to achieve multi-level waterproofing, it can be selected and set according to needs. For the first-level waterproofing, at least 2 waterproof grooves are provided on the adjusting shaft, located in the tube section. A waterproof rubber ring is provided on the waterproof grooves. During the adjustment process of the adjusting shaft, the waterproof rubber ring is always maintained in a squeezed state for continuous waterproofing. The second-level waterproofing can also be added. A second-level waterproof groove is provided at the end of the clutch stem near the knob. During assembly, a waterproof rubber ring is pressed in and positioned by a spacer to add a level of waterproofing when pressed in.

[0043] When assembling, press the tube into the clutch mounting hole 209. Then, load the adjusting gear 207 from above the circular calibration slot 2092. Press the assembled clutch head into the handle tube, pass through the central shaft hole of the adjusting gear, and snap the clutch positioning circlip inside the movement. Next, press the positioning rubber ring 202 into the annular brake groove 2013, and finally install the altitude display dial 201. After installation, the calibration gear 2011 at the bottom of the altitude display dial 201 meshes with the teeth of the adjusting gear 207. There is a bayonet matching the ball between every two gears of the adjusting gear 207. For the convenience of alignment, the bayonet is provided with guiding round holes along the axial direction on both sides of the connecting edge on the inner side of the adjusting gear, ensuring automatic guiding when the clutch head is pushed in and pulled out.

[0044] As Figure 20 is a partial sectional view when the clutch is in neutral; at this time, the watch is in normal use and does not require calibration. Press the clutch head 204 completely, and at this time, the ball circlip disengages from the position of the adjusting gear 207, and the ball is not stuck in the bayonet. At this time, if the clutch head is rotated, since the adjusting gear and the adjusting shaft are coaxial and there is no limit between them, the adjusting gear cannot be driven to rotate. The altitude display dial 201 remains stable due to the frictional force of the positioning rubber ring 202.

[0045] Figure 21 is a partial sectional view when the clutch is calibratable; when adjustment is required, pull out the clutch head outward. Due to the limitation of the clutch positioning circlip, it cannot be moved outward anymore. At this time, the ball circlip is at the same position as the adjusting gear 207. Rotate the clutch head, and the ball of the ball circlip automatically pops out to a certain bayonet; at this time, rotate the clutch head again and overcome the resistance of the positioning rubber ring. Due to the effect of the ball, drive the adjusting gear 207 to rotate, and then drive the rotation of the altitude display dial 201 to achieve the adjustment of the dial.

[0046] Figure 1 is the first 1 / 4 cut-angle sectional view of the structure for realizing the display of the altitude shown on the watch; Figure 2 is the second 1 / 4 cut-angle sectional view of the structure for realizing the display of the altitude shown on the watch; Figure 3 is the sectional view of the structure for realizing the display of the altitude shown on the watch; Figure 1 、 Figure 2 and Figure 3Two partial cross-sectional views of the watch from different positions illustrate the specific components and connections of the altitude indicator implementation structure from different angles. The figures focus on illustrating the altitude indicator implementation structure, so components not relevant to its implementation are omitted. The altitude indicator implementation structure primarily includes the watch caseback 110, the watch face 102, the altitude display dial, the altitude indicator hand 101, the metal vacuum capsule 107, the transmission rod 104, the reversing gear 105, the horizontal gear 103, the fixed meson 108, and the altitude detection movement compartment 106.

[0047] in Figure 4 It is a structural diagram of the horizontal gear; a horizontal transmission bevel gear 1032 is provided at one end of the horizontal gear, and an inverted cone support tip 1033 is provided at the center of the horizontal transmission bevel gear. The horizontal transmission bevel gear can rotate freely around the axis with the support of the inverted cone support tip; a pointer support shaft 1031 is concentrically arranged above the horizontal transmission bevel gear for installing the altitude indicating pointer 101, and the altitude indicating pointer rotates synchronously with the horizontal gear; the angle between the line where the teeth of the horizontal transmission bevel gear are located and the axis center line of the horizontal transmission bevel gear is B.

[0048] in Figure 5 The reversing gear 105 includes a receiving gear 1051 and a reversing bevel gear 1052 arranged concentrically. The angle between the line where the teeth of the reversing bevel gear 1052 are located and the axis of the reversing bevel gear is A, and A+B=90 degrees.

[0049] in Figure 6 It is a structural diagram of a metal vacuum membrane box; the metal vacuum membrane box 107 includes a fixed end 1071 and a free end 1072, the diameter of the free end 1072 is smaller than the diameter of the fixed end 1071; the edge of the fixed end 1071 is provided with at least various notches to realize the connection between the outside of the metal vacuum membrane box and the atmospheric pressure.

[0050] in Figure 7 It is a front perspective diagram of the height detection movement compartment; Figure 8It is a three-dimensional schematic diagram of the bottom view of the altitude detection movement chamber; the altitude detection movement chamber is an open-ended cylinder as a whole, and the altitude detection movement chamber is fixed at the circular opening, with the opening facing outward 1. The altitude detection movement chamber has an annular groove at the circular opening. The sum of the height of the fixed edge of the fixed end and the thickness of the fixed washer is the same as the groove depth of the annular groove; the diameter of the fixed end is slightly smaller than the diameter of the annular groove, and the fixed washer is in interference fit with the annular groove to fix the metal vacuum bellows on the altitude detection movement chamber. The altitude detection movement chamber is also fixed on the watch bottom cover as a whole. Threads can be provided on the outside of the altitude detection movement chamber, and the altitude detection movement chamber can be fixed on the watch bottom cover as a whole through the threads and the waterproof rubber ring. The diameter of the inner cavity of the altitude detection movement chamber is larger than the free end diameter of the metal vacuum bellows, so that the bottom of the metal vacuum bellows is fixed on the watch bottom cover, and the free end of the metal vacuum membrane can freely expand and contract according to the atmospheric pressure. At the other end of the altitude detection movement chamber, there is a transmission through hole 1061 with a diameter larger than that of the transmission rod, a square slot 1062 passing through the center of the circle, a circular slot 1063 located on one side of the square slot, and a horizontal through hole 1064 passing through the axis and perpendicular to the square slot in the vertical direction; there is at least one air inlet hole 1067 in the inner cavity of the altitude detection movement chamber to realize the connection between the inner cavity and the external atmosphere. An annular waterproof groove is coaxially provided inside or at the end of the transmission through hole 1061. A waterproof rubber ring is provided on the waterproof groove, and waterproof oil is applied on the waterproof rubber ring. A drill holder groove 1065 for placing the drill holder is also provided on the circular slot 1063.

[0051] Figure 9 It is a structural schematic diagram of the transmission rod; one end of the transmission rod is evenly provided with altitude conduction teeth 1041 in the vertical direction, and the other end is a smooth circular sliding rod part 1042.

[0052] The connection structure of the components and the cooperation relationship of each component will be further described below in combination with the assembly steps of the structure for displaying the altitude.

[0053] Assembly step 1:

[0054] Figure 10It is a schematic diagram of the assembly step 1 of the altitude display implementation structure. First, assemble the waterproof component on the transmission rod. Since the metal vacuum bellows must be connected to the atmosphere during operation to accurately measure the current ambient atmospheric pressure, a height detection movement chamber is set up. The movement is divided into an internal part and an external part, which are connected by a transmission through-hole 1061, that is, the transmission rod needs to pass through the transmission through-hole to transmit the changes of the metal vacuum bellows to the inside. It is necessary to ensure that the transmission rod can freely expand and contract, but also ensure that the transmission rod is waterproof when passing through the transmission through-hole. Therefore, at least one waterproof rubber ring should be set in the transmission through-hole. In this embodiment, a waterproof groove with a ring shape is provided at the end. For the convenience of implementation, first press the waterproof rubber ring into the waterproof groove, then press in the spacer to fix the waterproof rubber ring in the waterproof groove, and it is optional to drip in waterproof oil.

[0055] Assembly step 2:

[0056] Figure 11 It is a schematic diagram of the assembly step 2 of the altitude display implementation structure. Fix one end of the circular sliding rod part of the transmission rod to the end face of the free end of the metal vacuum bellows with glue. A circular groove matching the transmission rod can be set on the end face to position the installation position of the transmission rod. Then pass one end of the height conduction teeth of the transmission rod through the transmission through-hole and press the metal vacuum bellows into the annular groove.

[0057] Assembly step 3:

[0058] Figure 12 It is a schematic diagram of the assembly step 3 of the altitude display implementation structure. Since the sum of the height of the fixed edge of the fixed end and the thickness of the fixed spacer is the same as the groove depth of the annular groove; the diameter of the fixed end is slightly smaller than the diameter of the annular groove, and the fixed spacer is in interference fit with the annular groove. After pressing in the fixed spacer, the fixed end of the metal vacuum bellows is just fixed on the metal vacuum bellows, and the free end can freely expand and contract.

[0059] Figure 13 It is a schematic diagram of the assembly step 4 of the altitude display implementation structure. Place the reversing gear 105 into the square slot 1062, with the axis coaxial with the horizontal through-hole. The receiving gear 1051 is set to mesh with the height conduction teeth, and the reversing bevel gear faces the circular slot 1063. Screw the horizontal rotating shaft 109 into the horizontal through-hole. The inside of the horizontal through-hole has internal threads, and one end of the horizontal rotating shaft has matching external threads to limit the reversing gear in the square slot 1062 and make it rotate left and right following the up and down movement of the height conduction teeth.

[0060] Figure 14It is a schematic diagram of the assembly step 5 of the altitude display implementation structure; there are grooves and internal threads on the watch bottom cover that match the outer circle of the altitude detection movement compartment. After first pressing in the waterproof rubber ring, the waterproof screw-in altitude detection movement compartment is rotated. After it is fully screwed in, the waterproof rubber ring is squeezed to achieve the waterproof effect, and the altitude detection movement compartment is flush with the watch bottom cover. Or there are no internal threads on the watch bottom cover, and the altitude detection movement compartment is locked through a separately provided nut such as Figure 15 to fix it to the watch bottom cover.

[0061] Figure 16 It is a schematic diagram of the assembly step 7 of the altitude display implementation structure. After fixing the altitude detection movement compartment, place the drill holder in the drill holder groove 1065, then place the horizontal gear on the circular slot 1063. The horizontal transmission bevel gear 1032 is engaged with the reversing bevel gear 1052 of the reversing gear 105. The rotation of the reversing bevel gear 1052 drives the horizontal transmission bevel gear 1032; A + B = 90 degrees, preferably A = B = 45 degrees.

[0062] The above disclosure is only one embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A structure of a dial calibration clutch device, including an altitude display dial, characterized in that The upper surface of the altitude display dial is provided with scale indicators, and the outermost circle of the lower surface is provided with a calibration gear along the circumference. An annular limiting groove is also arranged inside the calibration gear; a positioning annular groove matching the annular limiting groove is arranged on the main body of the watch case, and the altitude display dial is fixed inside the main body of the watch case. An annular brake groove is arranged along the circumference on the side surface of the altitude display dial, and a positioning rubber ring is arranged on the annular brake groove; It also includes an adjusting gear, a handle tube and a clutch head. A clutch installation hole is arranged on the side surface of the main body of the watch case. A circular handle tube groove is arranged outside the clutch installation hole and matches the clutch head; The clutch installation hole is provided with a circular calibration slot at the position of the calibration gear. After the handle tube is pressed in from the outside of the circular handle tube groove, the rear end does not exceed the circular calibration slot, and the adjusting shaft of the clutch head passes through the handle tube; A clutch limiting clamping groove is arranged at the end of the adjusting shaft of the clutch head. A clutch positioning spring with a diameter larger than the clutch installation hole is clamped on the clutch limiting clamping groove. A ball opening is arranged on the adjusting shaft of the clutch head, and a ball spring is pressed into the ball opening. A bayonet matching the ball is arranged between every two gears of the adjusting gear; When the clutch head is pulled outwards and is restricted by the clutch positioning spring and cannot be pulled outwards any further, the ball opening is exactly at the position of the circular calibration slot, and the ball pops out and is stuck on the bayonet; When the clutch head is pressed inwards until it cannot be pressed in, the ball is pressed in and completely disengages from the bayonet.

2. The structure of the dial calibration clutch device according to claim 1, characterized in that The bayonet is provided with guiding round openings along the axial direction on both sides of the connecting edge on the inner side of the adjusting gear.

3. The structure of the dial calibration clutch device according to claim 2, wherein At least 2 waterproof grooves are arranged on the adjusting shaft, and waterproof rubber rings are arranged on the waterproof grooves.

4. A watch, characterized in that The control of the altitude display dial is realized by adopting the structure of the dial calibration clutch device described in any one of claims 1 to 3.

5. The watch according to claim 4, characterized in that It also includes a watch bottom cover, a watch face cover, an altitude indicating pointer, a metal vacuum capsule, a transmission rod, a reversing gear and a horizontal gear. The height of the metal vacuum capsule contracts and changes following the pressure of the external atmospheric pressure. One end of the transmission rod is evenly provided with height conduction teeth along the vertical direction; The reversing gear includes a receiving gear and a reversing bevel gear arranged concentrically. The diameter of the receiving gear is smaller than that of the reversing bevel gear; A horizontal conduction bevel gear is arranged at one end of the horizontal gear; The tooth shape of the receiving gear is matched with the tooth shape of the height conduction teeth; The reversing bevel gear is matched with the horizontal conduction bevel gear; One end of the metal vacuum capsule is fixed on the watch bottom cover, and the other end is fixedly connected with the end of the transmission rod without height conduction teeth; The reversing gear is fixed inside the movement through a horizontal rotating shaft and rotates freely around the horizontal rotating shaft, and the teeth of the receiving gear are arranged in tooth-to-tooth relationship with the height conduction teeth; The horizontal gear is fixed on a vertical rotating shaft. The vertical rotating shaft is perpendicular to the dial, and the horizontal gear is parallel to the dial. The reversing bevel gear is arranged in tooth-to-tooth relationship with the horizontal conduction bevel gear.

6. The watch according to claim 5, characterized in that it is provided with The included angle between the line where the teeth of the reversing bevel gear are located and the axis line of the reversing bevel gear is A. Let the included angle between the line where the teeth of the horizontal conduction bevel gear are located and the axis line of the horizontal conduction bevel gear be B, and A + B = 90 degrees.

7. The watch according to claim 6, characterized in that The rotating part to which the altitude indicating pointer is fixed is fixed on the vertical rotating shaft for fixing the horizontal gear and rotates at the same angle as the horizontal gear.

8. The watch according to claim 7, characterized in that It also includes an isolation chamber and a fixing washer. The isolation chamber is an open-ended cylindrical body at one end. There is a circular opening on the watch bottom cover that matches the isolation chamber. The isolation chamber is fixed at the circular opening with the opening facing outwards. There is an annular groove at the port of the circular opening. The metal vacuum bellows includes a fixed end and a free end, and the diameter of the free end is smaller than that of the fixed end; the sum of the height of the fixed edge of the fixed end and the thickness of the fixing washer is the same as the depth of the annular groove; the diameter of the fixed end is slightly smaller than the diameter of the annular groove, and the fixing washer is in interference fit with the annular groove to fix the metal vacuum bellows on the isolation chamber, and the isolation chamber is fixed on the watch bottom cover; the inner diameter of the isolation chamber is larger than the diameter of the free end of the metal vacuum bellows. There is a transmission hole with a diameter larger than the transmission rod, a square slot passing through the center, a circular slot on one side of the square slot, and a horizontal hole passing through the axis and perpendicular to the square slot in the vertical direction at the other end of the isolation chamber; at least one air intake hole is provided in the inner cavity of the isolation chamber to connect the inner cavity with the external atmosphere.

9. The watch according to claim 8, characterized in that The end of the transmission rod with high-conduction teeth completely extends out of the transmission hole. The horizontal rotating shaft is installed in the horizontal hole and passes through the reversing gear to limit the reversing gear at the position of the square slot. The center position of the circular slot is coaxially arranged with the center of the altitude display dial. The circular slot is set to match the size of the horizontal transmission bevel gear of the horizontal gear. The vertical rotating shaft is arranged at the axis position of the circular slot, and there is a drill holder at the bottom of the axis of the circular slot.

10. The watch according to claim 9, characterized in that There are two-stage stepped annular grooves at the port of the circular opening, which are the groove for installing the metal vacuum bellows and the fixing groove from the inside to the outside respectively; the height of the fixed edge of the fixed end is the same as the depth of the groove for installing the metal vacuum bellows, and the diameter of the fixed end is slightly smaller than the diameter of the groove for installing the metal vacuum bellows; the diameter of the fixing washer is the same as the diameter of the fixing groove, and the fixing washer is in interference fit with the fixing groove to fix the metal vacuum bellows on the isolation chamber, and the isolation chamber is fixed on the watch bottom cover.

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